Printing-machine



3 2 Sheets-Sheet 1. W. SCOTT. PRINTING MACHINE.

No. 486,12 Patented Nov. 15,1892.

z-llH iiii Illllljjlll g 7V 1mm,

33913 attoznm y w WW rfim (No Model.) 2 Sheets-Sheet 2.

W. SCOTT. PRINTING MACHINE.

N0.-486,129. Patented Nov. 15, 189.2.

attoz may 772m n Hun, 2.

n4: uonms PETERS so. Pwormumu, WASHINGTON. 04 c.

elevation of the machine.

UNITED, STATES PATENT OFFICE.

i/VALTER SCOTT, OF PLAINFIELD, NEW JERSEY.

PRINTING- MACHINE.

SPEGIFIGATION forming part of Letters Patent No. 486,129, dated November15, 1892.

Application filed March 9, 1891.

To all whom it may concern.-

Be it known that I, WALTER SCOTT, a citizen of the United States, and aresident of Plainfield, in the county of Union and State ofNewJersey,have invented certain new and useful Improvements inPrinting-Machines, of which the following is a specification.

My invention relates to that class of printin g-machines wherein theimpression is taken between a fiat platen and a fiat type-bed, each ofwhich has a motion of circumduction, and to the inking of forms on theflat beds; and it consists in the combinations of devices hereinaftermore fully described, and particularly pointed out in the appendedclaims.

In the accompanying drawings, forming part of this specification, Figure1 is a side Fig. 2 is a sectional View on the line 2 2 of Fig. 1,looking in the direction of the arrows. Fig. 3 is a side elevation ofthe machine, showing modifications of certain parts. Fig. 4 is afregmental view showing a modification of the inking apparatus. Fig. 5is a view showing a modification of certain parts.

The flat type-bedT is carried by two cranks 11 on shafts 14 15,respectively. Shafts 14 15 are journaled in the framework of themachine. Gears 18 19 on shafts 14 15, respectively, transmit motion tothe type-bed. The platen P is carried by two cranks 12 13 on shafts 1617, respectively. These shafts have gears 20 21, respectively, thegear2O meshing with gear 18 and the gear 21 with gear 19. Gears 20 21 aredriven by the gear 5. The upper type-bed T is mounted upon similarcranks 10 ll on shafts 14 15, respectively.

Shafts 14 15 have gears 22 23, respectively;

The upper platen P is hung on similar cranks 12 13 on shafts l6 17,respectively.

shafts have gears 24 25, respectively. gear 24 meshes with gear 22 and agear 25 with gear 23. the aforesaid gear 5. It will thus be seen thatthe type-bed remains parallel to itself, While having a circular motiongiven it by the cranked shafts 10 11. The same istrue of the platen.This is sometimes called a motion of circumduction. The arrows on thegears show the direction of motion.

type-bed T has aform 28 thereon,as an outside form, for instance, andthe type-bed T bed.

These;

The

The gears 2223 are driven by.

The

Serial No. 384,326. (No model.)

has a form 29 thereon, as the inside, for instance.

0n the type-bed T at one end are mounted sprocket-wheels 39, and at theother end sprocket-wheels'41 are mounted, preferably, in an adjustablebearing 58. This bearing 58 is held and guided by the guides 100 101 andis adjustable by means of screw-bolts and nuts thereon on each side ofthe bearing '58. The sprocket-chains 40, passing about' sprocket-wheels39 41, carry the inking-rollers 50. These inking-rollers are shown aspassing along the under side of the type- "bed T the type-bed being inits upper positiou. When the type-bed is in its lowest position, theseinking-rollers are on top and about half-way across the form, theymaking one circuit about the type-bed to one turn of the cranked shaftsthat carry the The curved or semicircular left-hand end in Fig. l of thetype-bed T is used as an inking-table, across which the inking-rollersare drawn just after crossing or inking the 'form,'and the bottom of thebed is a distributing-table. The sprocket-wheels 39 are-given theirmotion by suitable gearing. I have shown a fixed internal gear 36,secured to the framework of. the machine, a double-face intermediategear 37, turning on a stud fastened to the type-bed T bya bracket 61,and a pinion on the shaft of the sprocket-wheels 39. The double-faceintermediate gear ifiesh'es with the internal gear and with thesprocketpinion 38 and transmits rotary motion from the former to thelatter, thus causing the inking-rollers to travel around the bed. As thetype-bed T makes a circuit the intermediate gear describes a circularpath of a radius equal to the distance between the centers 0 the shaft10 and the journal 14.

Ink is supplied to the curved or semicircular inking-table on thetype-bed by means of afountain47and aductor-roller 48. The roller 48"iscarried by arms 42, pivoted at 102 in the framework of the machine. Thearms 42 are held against the ink-table by means of a rod 46, pivoted tothe arms 42, passing through a stationarylug 49 and surrounded byaspring45, which abuts against, the lug and againsta pin'in the rod. move overto the fountain by means of an arm 43, rigid with shaft 102 and operatedby a cam The ductor-roller is caused to 44 on the journal 16, or aclosed cam can be used to move the ductor in both directions.

The operation of the devices for supplying ink to the curved ink-tableis as follows: The table at about the time of the printing comes againstthe roller 48 and the two move together to the left, the rollermovingupwardly of the table as the latter moves to the left and downwardand to the right and downward. The roller 48 may take ink from thefountain twice during one turn of the table T the cam 44 being properlyshaped for that end. The inking-rollers 50 on the lower typebed aredriven by sprocketwheels 35 and sprocket-chains. The sprocket-pinion 34on the shaft of the sprocket-wheels revolves about the circumference ofa pinion 33 on a short shaft passing through the framework, on the otherend of which shaft is a pinion 32. The pinion 32 is driven by anintermediate gear 31 and a gear 30 on the journal 17. The arrow showsthe direction of motion of the sprocketchains. There is an ink-table atthe righthand end of the bed T in Fig. 1, over which the ink-rollers 50move. This table is supplied with ink from the fountain 53 by theductor-roller 51 on pivoted arms 52. These arms are operated in a mannersimilar to that just described for the arms 42 to supply ink to thetable. The sprocket-wheels at the lefthand end of the type-bed T aremounted in adjustable boxes 55, movable on guides 56 57.

In Fig. 1 the paper is drawn from a roll R around rollers 87 by thefeed-rollers 62 63, the surface speed of which is the same as that ofthe centers of the cranks 12 13. Fig. 1 shows thelower type-bed andplaten separated and the upper type-bed and platen as taking animpression on the paper. The speed of the type-bed and platen at themoment of impression is the same as that of the paper, and the motion ofthe bed, platen, and paper is in the same direction. The feed-rollers 6263 feed. the paper to cutting-cylinders 64 65. The feed and cuttingcylinders are driven by gears 27 from a gear 26 on the journal 16. Afterthe perfected copies are cut apart by the cylinders they are deliveredto tapes 68 69, running about rollers 66 67, respectively. Guides 70support the paper from the cuttingcylinders to the tapes.

In the modification shown at Fig. 3 the typebeds, platens, and thegearing for operating these parts are the same as in Fig. 1. There aretwo sets of inking-rollers on the sprocket chains for each type-bed.These inking-rollers make a half circuit about the type-bed for one turnof the cranked shafts carrying the same. The sprocket-wheels 39 aredriven by a fixed internal gear 36 and a gear 38 on the shaft of thesprocket-wheels which meshes with the internal gear. The sprocket-wheels41 are each adjustable by a stud 79, fitting in socket 80 in thetype-bed and held in any desired position by the set bolt or screw 81.The right-hand end of the type-bed T is used as an ink-table and thebottom as a distributing-table, as before. The ductor-roller on arms 42is shown as going to the fountain 47. The arm 43, rigid with the shaftof arms 42, is operated by means of acam on journal 17, engaging withthe roller 73 on the arm 71, the forks 72 of which are guided by thejournal 17. The sprocket-chain for the lower inking-rollers passes aboutsprocket-wheels 35 and sprocket-wheels 82, the latter being adjustable,as shown. The sprocket-wheels 35 are driven in a manner similar to thatjust described for the sprocket-wheels 39. The ductor-roller 51 on arms52 is held against the inking-table at the left-hand end of the type-bedT by a spring 76, surrounding the rod 75, jointed to one of the arms 52and passing through a lug 74. The ductor-roller is moved over to thefountain 53 by means of a cam 44 on the journal 14, which engages aroller on the pivoted arm 77. The arm 77 moves the arms 52 by means of arod 78, connected to an arm of the shaft of the said arms 52. Theleft-hand end of the type-bed T is used as an inking-table. As long asthe speed of the paper is the same at the moment of printing as that ofthe cranks 12 13*, it is of no moment what its speed maybe at othertimes, whether faster or slower. Fig. 3 showsthegearing by means ofwhich the speed of the paper is varied, subject to the just-namedcondition. In this figure the gear 27 is of the same size as the gear 26and is geared thereto by gears 27. Gear 27 does not gear directly to thecylinder 64, nor to roller 62, as in Fig. 1, but has the bilobal gear 88on its shaft, which gear meshes with the bilobal gear 89 on the shaft ofthe cylinder 64. It will be noted that there are two points in onerevolution of the cutting-cylinder and feed-rolls where the speeds ofthese parts are the same as that of the cranks referred to. This isowing to the fact that in the construction shown the printing devicestake impressions alternately and the cutting-cylinders are of the sameradius as the cranks of the shafts moving the printing devices. Thecylinders 64 65 are geared together and the latter drives the feed-rollsthrough the intermediate gear 87. In the position shown the speeds ofthe paper and the bed and platen are the same. The mechanism justdescribed is applicable to such a machine as that shown in Fig. 3thatis, one wherein two forms and two platens are used; but it is notmaterial whether these be fiat or cylindrical or whether they rotate,reciprocate, or have a motion of circumduction.

The construction shown in Fig. 5 shows the form of the gearing used whenthere is but one platen and one type-form. The gears 27 and 27 are as inthe mechanism just described. The shaft of gear 27 has the eccentrio orunilobal gear90 thereon, which meshes with the eccentric or unilobalgear 91 on the cylinder 64. The cylinders 64 65 and rolls 62 63 aregeared together, as just described in connection with Fig. 3. At themoment of impression the speeds of cylinders 64.65, rolls 62 63, andgear 27 are the same as that of the impression device.

In the modification shown at Fig. 4 the inking-rollers are drawn aboutthe type-beds by sprocket-chains, and I place a rack 83 on the side ofthe type-bed and gear this rack with a metal distributing-roll 86 bymeans of gears 84 85. The metal roll isin contact with theinking-rollers 50.

It will readily be understood that therack 83 extends all around thetype-bed and that it has semicircular ends joined by straight portions.Of course in this modification the positions of the sprocket-wheels arefixed relatively to the rack, so that there is no adj ustment of thebearings.

It is understood, of course, that the cranked shafts supporting thetype-beds and platens are journaled at each end by means similar tothose shown.

It will be noted that the paper is printed on one side, is turned over,is then printed on the other side, and is subsequently severed betweenthe perfected copies.

In the machine shown at Fig. 1 the upper bed T could be used as bothtype-bed and impression -surface in so far as certain features of myinvention are concerned, the lower platen P being omitted, as well asits shafts and gears, and the type-bed T being placed high enough forits form to coact when in its highest position with the bed T when inits lowest position. At the moment of impression the inking-rollers ofbed T would be at the under side thereof, while the rollers of bed Twould be on top inking the form, and in this case that portion of thebottom of the bed T used 'as a platen would not be used as adistributing-table.

The ink table and fountain are preferably placed at that end of the bedin all cases which the inkingrollers cross immediately after leaving theforms.

It is obvious that in those cases where there are two impressions madesimultaneously, whether one on each side or bothon the same side of theweb, the construction shown in Fig. 5 can be used. While ellipticalgearing is shown in Figs. 3 and 5, other well-known forms of gearing ormechanisms which produce the result (variable speed of the paper) can beused instead without departing from my invention. In some cases,especially where the motion of the printing devices is a rotating one,lobal gears would be used to give the required motion to the paper.

Having thus fully described my invention, what I desire to secure byLetters Patent is 1. In a printing-machine,.the combination of twoindependent pairs of fiat platens and fiat type-beds, the components ofeach of said pairs having a motion of circumduction and being gearedtogether, and a driver gear common to both of said pairs, substantiallyas described.

2. In a printing-machine, the combination of two independent pairs offlat platens and flat type-beds, the components of each pair having amotion of circumduction and being geared together, a driver common toboth of said pairs, feed-rollers for drawing the paper from a rollbetween the type-bed and platen of each pair, and rollers for guidingthe paper, substantially as described.

3. In a printing-machine, the combination of two pairs of flat platensand flat type-beds, the components of each pair having a motion ofcircumduction and being geared together, a driver common to both of saidpairs, feedrollers for drawing the paper from a roll between the platenand type-bed of each pair, rollers for guiding the paper,cutting-cylinders for severing the perfected copies, and gearingconnecting the feed and cutting devices with the gearing of one of saidpairs, substantially as described. n 4. In a printing-machine, thecombination of a flat type-bed carrying the form and havinga motion ofcircumduction, inking-rollers, chains carrying said rollers, andmechanism for causing said rollers to traverse the forms, substantiallyas described.

5. In a printing-machine, the combination of a fiat type-bed carryingthe form and having a motion of circumduction, inking-rollers, endlesschains carrying said rollers, sprocket- .wheels, and mechanism forrotating said wheels, whereby the inking-rollers are caused to traversethe forms, substantially as described.

6. In a printing-machine, the combination of a flat type-bed carryingthe form and having a motion of circumduction,inking-rollers, endlesssprocket-chains carrying the rollers, sprocket-wheels,and gear-wheelsfor rotating said sprocket-wheels, whereby the ink-rollers are caused toink the forms, substantially as described.

7. In a printing-machine, the combination of a flat type-bed carryingthe form and having a motion of circumduction, inking-rollers, endlesssprocket-chains carrying said rollers, sprocket-wheels at each end ofthe bed, a sprocket-pinion connected with the sprocketwheels at one endof the bed, and a gear on the stationary frame for driving thesprocketpinion, substantially as described.

8. In a printing-machine, the combination of a flat type-bed carryingthe form and having a motion of circumduction, inking-rollers, chainscarrying said rollers, sprocket-wheels at each end of the bed, asprocket-pinion connected with the sprocket-wheels at one end of thebed, a stationary internal gear, and a gear on the bed intermediate theinternal gear and the sprocket-pinion, substantially as described.

9. In a printing-machine, the combination of a fiat type-bed carryingthe form and having a motion of circumduction, inking-rollers, means forcausing them to move around the bed, and an inking-table on the bed,over which the rollers pass, substantially as described.

10. In a printing-machine, the combination of a fiat type-bed carryingthe form and having a motion of circu mduction, inking-rollers, meansfor causing them to move around the bed, an inking'table on the bed,over which the rollers pass, an ink-fountain, and a movableductor-roller for supplying the table with ink from the fountain,substantially as described.

11. In a printing-machine, the combination of a flat type-bed carryingthe form and havinga motion of circumduction, inking-rollers movingaround the said bed, an inking-table on the bed, a stationaryink-fountain, and a doctor-roller on pivoted arms for supplying ink tothe table from the fountain, substantially as described.

12. In a printing-machine, the combination of a fiat type-bed carryingthe form and having a motion of circumduction, inking-rollers movingaround said bed, an inking-table on the bed, a stationary ink-fountain,a doctorroller on pivoted arms for supplying ink to the table from thefountain, and a cam for moving the roller to the fountain, substantiallyas described.

13. In a printing-machine, the combination of a flat type-bed carryingthe form and having a motion of circumduction, inking-rollers movingaround the said bed, an inking-table on the bed, an ink-fountain, aductor-roller on pivoted arms, a cam for moving the ductor into contactwith the fountain, and a spring for moving the ductor against theinking-table, substantially as described.

14. In a printing-machine, the combination of a flat type-bed carryingthe form and havinga motion of circumduction, inking-rollers, endlesssprocket-chains carrying said rollers, sprocket-wheels at each end ofthe bed, and means for adjusting the bearings for the wheels at one endof the bed, substantially as and for the purpose described.

15. In a printing-machine, the combination of a flat bed carrying theform, inking-rollers, a distributing-roller, sprocket-chains carryingsaid rollers, sprocketrwheels at each end of the bed, a rack havingsemicircular ends on the bed, and gearing connecting thedistributing-roller and said rack, substantially as and for the purposesdescribed.

16. In a printing-machine, the combination of a flat platen and a flatbed, each having a motion of circumduction and being geared together, adriver-gear, feed-rolls drawing the paper between the platen and bed,cuttingcylinders geared together, lobal gearing driving one of saidcylinders, and gearing from one part of the printing device driving saidlobal gears, as and for the purposes described.

17. In a printing-machine, the combination of two pairs of fiat platensand fiat beds, the components of each pair having a motion ofcircumduction and being geared together, a

driver common to said pairs, feed-rollsdrawing the paper between theplaten and bed of each pair, cutting-cylinders geared together, lobalgearing driving one of said cylinders, and gearing from one pair of theprinting devices driving said lobal gears, as and for the purposesdescribed.

18. In aprinting-machine, the combination of printing devices takingimpressions intermittently upon a Web, feed-rolls drawing the web from aroll, and variable-speed mechanisn'r, substantially as described,driving the feed-rolls at or near the speed of the printing deviceswhile the impressions are being taken and at a varying speed at othertimes, substantially as and for the purposes described.

19. In aprinting-machine, the combination of printing devices takingimpressions intermittently upon a web, feed-rolls drawing the web from aroll, cutting-cylinders, and variable-speed mechanism, substantially asdescribed, driving the rolls and cylinders at or near the speed of theprinting devices while the impressions are being taken and at a varyingspeed at other times, as and for the purposes described.

20. In a printing-machine, the combination of two pairs of printingdevices taking impressions intermittently and alternately upon a Web,feed-rolls drawing the web from a roll, and variable-speed mechanism,substantially as described, driving the rolls at or near the speed ofeach of said pairs while such pair is taking an impression and at avarying speed at other times, substantially as and for the purposesdescribed.

21. In a printing-machine, the combination of two pairs of printingdevices taking impressions alternately and intermittently upon a web,feed-rolls drawing the web from a roll, cutting-cylinders, andmechanism, substantially as described, driving the rolls and cylindersat or near the speed of each of said pairs while such pair is taking animpression and at a varying speed at other times, substantially as andfor the purposes described.

22. In a printing-machine, the combination of a fiat platen, a fiattype-bed, each having a motion of circumduction and being gearedtogether, feed-rolls drawing the web between the platen and bed, andlobal gears and gearing connecting said rolls and the gearing of theprinting devices, substantially as described.

23. In a printing-machine, the combination of a flat platen, a flattype-bed, each having a motion of circumduction and being gearedtogether, feed-rolls drawing the web between the platen and bed,cutting-cylinders, and lobal gears and gearing connecting said rolls andcylinders and the gearing of the printing devices, substantially asdescribed.

24. In a printing-machine, the combination of two pairs of flat platensand flat type-beds, the components of each pair having a motion ofcircumduction and being geared together, feed-rolls drawing the Webbetween the platen and bed of both pairs, and lobal gears and gearingconnecting said rolls and the gearing and cylinders and the gearing ofthe printing of the printing devices, substantially as and devices,substantially as and for the purposes for the purposes described.described.

25. In a printing-machine, the combination Signed at New York, in thecounty of New 5 of two pairs of fiat platens and flat type-beds, Yorkand State of New York, this 7th day of I 5 the components of each pairhaving a motion March, A. D. 1891.

of circumduction and being geared together, WALTER SCOTT. feed-rollsdrawing the web between the platen Witnesses: and bed of each pair,cutting-cylinders, and ISAAC N. FALK,

1o lobal gears and gearing connecting said rolls I R. W. BARKLEY.

